Yes the Febi is chinese, you have to look for the cute little "Pc" logo behind all the "Febi Germany" logo's and txt, but it's there, even on the damn grease packet. Plus they are physically, easily, inferior rubber.
Everything I've gotten from GKN has still been either German or from elsewhere in Easter Europe, and the boots are glaringly better quality. I will not use any cv joint willingly that isn't stock from back in the day, or GKN. Yes you will spend $400 on 4 joints, and yes they will last several hundred thousand miles with one reboot/re-grease in between. I'm lucky to get 30K out of boots/joints from anyone else, Empi, Cardone, whoever. They are all garbage.
You'd be surprised how nice an A1 VW is with QUALITY parts on it.
Boge/Sachs blow and are made in mexico these days too, just FYI. On par with Gabriel/Monroe, or maybe slightly better, in my experience.
Interestingly I can still get what I assume is old-stock for aircooled Porsche cars that are German from them.